Generic Cell Rate Algorithm

TAT
theoretical arrival time
L (Limit)
= CDVT (cell delay variation tolerance)
T
increment (UNI 3.1 calls it I for increment)
This is explained in detail in the ATM Forum UNI 3.1 specification, p. 79, the ATM Forum Traffic Management Specification TM 4.0 and in Tanenbaum, Computer Networks, 3rd ed., p. 463ff.